encrypt - Encrypt 64 bits messages


SYNOPSIS

       #define _XOPEN_SOURCE

       #include <unistd.h>

       void encrypt(char block[64], int edflag);
       void setkey(const char *key);


DESCRIPTION

       These  functions encrypt and decrypt 64 bit messages.  The
       setkey() function sets the key used by encrypt(). The  key
       parameter used here is an array of bytes, having each byte
       the numerical  value  1  or  0.  The  key[n]  byte,  where
       n=8*q-1, is ignored consisting the key used of 56 bits.

       The setkey() function modifies the passed buffer, encoding
       if edflag is 0, and decoding if 1 is being passed.

       These functions are not reentrant.


RETURN VALUES

       These functions do not return any value.


CONFORMING TO

       SVID, SUSv2


SEE ALSO

       crypt(3)